Wash-board



(No Model.)

H. & J. P. LUTHER.

WASH BOARD.

No. 309,721. Patented Dec. 23, 1884.

INVENTOR:

- .KYJ BY ATTORNEY? WIT SES:

. UNITED ST TES PATENT Genres.

HENRY LUTHER AND JUSTUS P. LUTHER, OF BERLIN, TVISCONSIN.

WASH-BOARD.

SPECIFlCATION forming part of Letters Patent No. 309,721, dated December 23, 1884.

A mplication filed October 31, 1888.

To aZZ whom it may concern.-

Be it known that we, HENRY LUTHER and J UsTUs P. LUTHER, both of Berlin, in the county of Green Lake and State of \Visconsin, have invented a new and Improved VVash- Board, of which the following is a full, clear, and exact description.

Our invention consists of improvements in the construction of zinc wash-boards with wood frames,whereby it is designed to provide more substantial and lasting boards of greater strength and with fewer joints than as heretofore made, and to provide different forms of the corrugations on the different sides of the board for different kinds of fabrics, all as here inafter fully described.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a front elevation of our improved wash-board, and Fig. 2 is a section of the same on the line a: a: of Fig. 1.

lVe use stronger and heavier plates of zinc than are generally employed, to have sufficient strength to enable the center piece commonly employed to be dispensed with, and we make the plate in suitable length to form the plain part a above the corrugations Z) and c of the sheet, instead of using wood, as heretofore,

by which we make said part more lasting, and

avoid the joint between the wood board and the zinc plate. lVe make the corrugations with larger curves b on one side and smaller and more angular-shaped curves 0 on the other side, thus making the sides better adapted for different kinds of goods than if both were made alike. The side on which the acute corrugations o are formed will hold the water on the surface better than the ordinary corrugations, 1), which is a great advantage in washing some classes of fabrics.

For the frame we propose to use a wood bar, (I, of suitable length and cross-section to bend into the proper form for said frame,with round corners e, which we make by steaming the bar so as to bend without the saw-cuts commonly made to facilitate the bending, to avoid the decay which the water causes in said cuts, and thus make the frame more du rablc; and to (No model.)

fasten the zinc board to the frame we simply place the zinc board between the two sides of the frame and clamp the same tothe edges of the zinc by wires f, extending from one to the other of the sides of the frame along some of the grooves of the corrugations and through the frame, and secured by heads 9, riveted down on suitable washers, and we solder the wires to the plate, thus making substantial connection of the frame and the plate without any joints opening into the wood except at the top and admitting water thereto along the sides, which keepsthe wood wet and causes it to rot. At the top of the board, where the rods do not clamp the frame to it, it is desirable to have the end of the plate enter a groove, h,- but the groove is not so objectionable here, because less water will get in and it will run out better, and the wood will not be damaged so much by the water.

WVe are aware that it is not new to form a wash-board with a plain section extending above the corrugations; also, that the frame has been formed of a single piece of wood bent around the edges of a corrugated wash-board, and secured by a rod passing through the lower ends of the piece and through a bentover portion at the bottom of the wash-board; also, that a wash-board having eoncavities and projections has had its side pieces secured to it by rods passing across the rear face thereof and through the side pieces; also, that awashboard has been provided with center board, upon the opposite sides of which the zinc wash-boards, having differently-shaped corrugations, were secured, and we do not claim any of the said constructions, broadly, as of our invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a wash-board, the single zinc plate corrugated on both sides, as shown, the corrugations c on one side being more angular than the corrugations b on the other side of said plate,whereby said plate is made to form two rubbing-surfaces adapted to different ma terials, as set forth.

2. A wash-board consisting of the single zinc plate formed with a plain upper end, a,

and corrugated on both sides below the same, tions, and riveted at g to the sides of the frame,

the corrugations c on one side being; more angular than the corrugations b on the other side of said plate, the bent frame 0 having a groove, h, for the upper edge of the part a to enter, the vertical portions of the frame being without any grooves, and rods f, soldered to a the zinc plate at the bottoms of the corrugasubstantially as set forth.

HENRY LUTHER. JUSTUS l. LUTHER.

lVitnesses:

GUSTAV KILLNER, G. C. LLnNsGAnD. 

